Vapor condensation induced by fast-moving liquid film in the presence of noncondensable gas molecules
Vapor condensation induced by fast-moving liquid film in the presence of noncondensable gas molecules
复制标题
在不可凝气体分子存在的情况下由快速移动的液膜引起的蒸气凝结
DOI:
10.1016/j.icheatmasstransfer.2023.106622
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发表时间:
2023
影响因子:
7
通讯作者:
Watanabe Masao
中科院分区:
文献类型:
--
作者:
Ohashi Kotaro;Kobayashi Kazumichi;Fujii Hiroyuki;Watanabe Masao
In this study, vapor condensation phenomena at the surface of a fast-moving planar liquid film in a gas mixture (vapor and noncondensable (NC) gas), aimed to imitate a cavitation bubble collapse, were simulated to investigate the evaporation and condensation coefficients of vapor molecules based on the Enskog–Vlasov equation. These coefficients indicate the evaporation and condensation rates of vapor molecules, and they were incorporated into the kinetic boundary condition (KBC) for the vapor/gas–liquid interface. We employed the Enskog–Vlasov direct simulation Monte Carlo method to simulate the condensation phenomena. Based on the results, we confirmed that the obtained coefficients decreased with an increase in the liquid temperature and NC gas content at the condensing interface. Additionally, the coefficients had the same values as those in the equilibrium state, even for such a moving system. Notably, the nonequilibrium effect on condensation phenomenon discussed in the field of cavitation bubble dynamics, whereby vapor molecules fail to condense when the liquid velocity is significantly high, could not be confirmed in this simulation. Furthermore, we conducted an analysis based on the Boltzmann equation using the direct simulation Monte Carlo method to verify the obtained coefficients.
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影响因子:
4.6
作者:
Meland, R;Frezzotti, A;Hafskjold, B
通讯作者:
Hafskjold, B
DOI:
--
发表时间:
1997
期刊:
影响因子:
--
作者:
K. Aoki;S. Takata;S. Kosuge
通讯作者:
S. Kosuge
影响因子:
8.6
作者:
Ishiyama, T;Yano, T;Fujikawa, S
通讯作者:
Fujikawa, S
影响因子:
4.6
作者:
Ohashi, Kotaro;Kobayashi, Kazumichi;Watanabe, Masao
通讯作者:
Watanabe, Masao
DOI:
10.1063/1.5091724
发表时间:
2019
期刊:
The Journal of chemical physics
影响因子:
--
作者:
J. Nie;A. Chandra;Z. Liang;P. Keblinski
通讯作者:
P. Keblinski